城市地下分岔隧道烟气控制策略研究  

Study on Smoke Control Strategies for Urban Underground Branched Tunnels

作　　者：徐启利 XU Qili

机构地区：[1]山东省临沂市公路事业发展中心沂南县中心,山东临沂276300

出　　处：《重庆建筑》2024年第S01期48-51,共4页Chongqing Architecture

摘　　要：该文以某城市地下公路隧道工程为例,选取具有主-岔-匝隧道的区域,通过开展数值模拟研究交通分流时,城市地下道路分汇流处火灾主路实施纵向通风,控制隧道烟气回流的临界风速,并在此基础上根据控烟效果确定更加符合主-岔-匝隧道火灾的通风控烟策略,为主-岔-匝隧道通风设计提供参考。Taking an urban underground highway tunnel project as an example,this paper selects a region with a main-branch-ramp tunnel configuration.Through numerical simulation,the study investigates the critical wind speed required to control smoke backflow during a fire occurring at the main road intersection of urban underground road divergence and convergence,when longitudinal ventilation is implemented.Based on this analysis,a more suitable ventilation and smoke control strategy tailored to the fire scenario in main-branchramp tunnels is determined,providing a reference for the ventilation design of such tunnel systems.

关 键 词：主-岔-匝隧道 控烟策略 临界风速 火灾 

分 类 号：U458[建筑科学—桥梁与隧道工程]